[linux-2.6-block.git] / arch / x86 / kernel / cpu / intel_rdt.h

#ifndef _ASM_X86_INTEL_RDT_H
#define _ASM_X86_INTEL_RDT_H

#include <linux/sched.h>
#include <linux/kernfs.h>
#include <linux/jump_label.h>

#define IA32_L3_QOS_CFG		0xc81
#define IA32_L3_CBM_BASE	0xc90
#define IA32_L2_CBM_BASE	0xd10
#define IA32_MBA_THRTL_BASE	0xd50

#define L3_QOS_CDP_ENABLE	0x01ULL

/*
 * Event IDs are used to program IA32_QM_EVTSEL before reading event
 * counter from IA32_QM_CTR
 */
#define QOS_L3_OCCUP_EVENT_ID		0x01
#define QOS_L3_MBM_TOTAL_EVENT_ID	0x02
#define QOS_L3_MBM_LOCAL_EVENT_ID	0x03

#define MBM_CNTR_WIDTH			24

#define RMID_VAL_ERROR			BIT_ULL(63)
#define RMID_VAL_UNAVAIL		BIT_ULL(62)

/**
 * struct mon_evt - Entry in the event list of a resource
 * @evtid:		event id
 * @name:		name of the event
 */
struct mon_evt {
	u32			evtid;
	char			*name;
	struct list_head	list;
};

/**
 * struct mon_data_bits - Monitoring details for each event file
 * @rid:               Resource id associated with the event file.
 * @evtid:             Event id associated with the event file
 * @domid:             The domain to which the event file belongs
 */
union mon_data_bits {
	void *priv;
	struct {
		unsigned int rid	: 10;
		unsigned int evtid	: 8;
		unsigned int domid	: 14;
	} u;
};

struct rmid_read {
	struct rdtgroup		*rgrp;
	struct rdt_domain	*d;
	int			evtid;
	u64			val;
};

extern unsigned int intel_cqm_threshold;
extern bool rdt_alloc_capable;
extern bool rdt_mon_capable;
extern unsigned int rdt_mon_features;

enum rdt_group_type {
	RDTCTRL_GROUP = 0,
	RDTMON_GROUP,
	RDT_NUM_GROUP,
};

/**
 * struct mongroup - store mon group's data in resctrl fs.
 * @mon_data_kn		kernlfs node for the mon_data directory
 * @parent:			parent rdtgrp
 * @crdtgrp_list:		child rdtgroup node list
 * @rmid:			rmid for this rdtgroup
 */
struct mongroup {
	struct kernfs_node	*mon_data_kn;
	struct rdtgroup		*parent;
	struct list_head	crdtgrp_list;
	u32			rmid;
};

/**
 * struct rdtgroup - store rdtgroup's data in resctrl file system.
 * @kn:				kernfs node
 * @rdtgroup_list:		linked list for all rdtgroups
 * @closid:			closid for this rdtgroup
 * @cpu_mask:			CPUs assigned to this rdtgroup
 * @flags:			status bits
 * @waitcount:			how many cpus expect to find this
 *				group when they acquire rdtgroup_mutex
 * @type:			indicates type of this rdtgroup - either
 *				monitor only or ctrl_mon group
 * @mon:			mongroup related data
 */
struct rdtgroup {
	struct kernfs_node	*kn;
	struct list_head	rdtgroup_list;
	u32			closid;
	struct cpumask		cpu_mask;
	int			flags;
	atomic_t		waitcount;
	enum rdt_group_type	type;
	struct mongroup		mon;
};

/* rdtgroup.flags */
#define	RDT_DELETED		1

/* rftype.flags */
#define RFTYPE_FLAGS_CPUS_LIST	1

/*
 * Define the file type flags for base and info directories.
 */
#define RFTYPE_INFO			BIT(0)
#define RFTYPE_BASE			BIT(1)
#define RF_CTRLSHIFT			4
#define RF_MONSHIFT			5
#define RFTYPE_CTRL			BIT(RF_CTRLSHIFT)
#define RFTYPE_MON			BIT(RF_MONSHIFT)
#define RFTYPE_RES_CACHE		BIT(8)
#define RFTYPE_RES_MB			BIT(9)
#define RF_CTRL_INFO			(RFTYPE_INFO | RFTYPE_CTRL)
#define RF_MON_INFO			(RFTYPE_INFO | RFTYPE_MON)
#define RF_CTRL_BASE			(RFTYPE_BASE | RFTYPE_CTRL)

/* List of all resource groups */
extern struct list_head rdt_all_groups;

extern int max_name_width, max_data_width;

int __init rdtgroup_init(void);

/**
 * struct rftype - describe each file in the resctrl file system
 * @name:	File name
 * @mode:	Access mode
 * @kf_ops:	File operations
 * @flags:	File specific RFTYPE_FLAGS_* flags
 * @fflags:	File specific RF_* or RFTYPE_* flags
 * @seq_show:	Show content of the file
 * @write:	Write to the file
 */
struct rftype {
	char			*name;
	umode_t			mode;
	struct kernfs_ops	*kf_ops;
	unsigned long		flags;
	unsigned long		fflags;

	int (*seq_show)(struct kernfs_open_file *of,
			struct seq_file *sf, void *v);
	/*
	 * write() is the generic write callback which maps directly to
	 * kernfs write operation and overrides all other operations.
	 * Maximum write size is determined by ->max_write_len.
	 */
	ssize_t (*write)(struct kernfs_open_file *of,
			 char *buf, size_t nbytes, loff_t off);
};

/**
 * struct mbm_state - status for each MBM counter in each domain
 * @chunks:	Total data moved (multiply by rdt_group.mon_scale to get bytes)
 * @prev_msr	Value of IA32_QM_CTR for this RMID last time we read it
 */
struct mbm_state {
	u64	chunks;
	u64	prev_msr;
};

/**
 * struct rdt_domain - group of cpus sharing an RDT resource
 * @list:	all instances of this resource
 * @id:		unique id for this instance
 * @cpu_mask:	which cpus share this resource
 * @rmid_busy_llc:
 *		bitmap of which limbo RMIDs are above threshold
 * @mbm_total:	saved state for MBM total bandwidth
 * @mbm_local:	saved state for MBM local bandwidth
 * @ctrl_val:	array of cache or mem ctrl values (indexed by CLOSID)
 * @new_ctrl:	new ctrl value to be loaded
 * @have_new_ctrl: did user provide new_ctrl for this domain
 */
struct rdt_domain {
	struct list_head	list;
	int			id;
	struct cpumask		cpu_mask;
	unsigned long		*rmid_busy_llc;
	struct mbm_state	*mbm_total;
	struct mbm_state	*mbm_local;
	u32			*ctrl_val;
	u32			new_ctrl;
	bool			have_new_ctrl;
};

/**
 * struct msr_param - set a range of MSRs from a domain
 * @res:       The resource to use
 * @low:       Beginning index from base MSR
 * @high:      End index
 */
struct msr_param {
	struct rdt_resource	*res;
	int			low;
	int			high;
};

/**
 * struct rdt_cache - Cache allocation related data
 * @cbm_len:		Length of the cache bit mask
 * @min_cbm_bits:	Minimum number of consecutive bits to be set
 * @cbm_idx_mult:	Multiplier of CBM index
 * @cbm_idx_offset:	Offset of CBM index. CBM index is computed by:
 *			closid * cbm_idx_multi + cbm_idx_offset
 *			in a cache bit mask
 */
struct rdt_cache {
	unsigned int	cbm_len;
	unsigned int	min_cbm_bits;
	unsigned int	cbm_idx_mult;
	unsigned int	cbm_idx_offset;
};

/**
 * struct rdt_membw - Memory bandwidth allocation related data
 * @max_delay:		Max throttle delay. Delay is the hardware
 *			representation for memory bandwidth.
 * @min_bw:		Minimum memory bandwidth percentage user can request
 * @bw_gran:		Granularity at which the memory bandwidth is allocated
 * @delay_linear:	True if memory B/W delay is in linear scale
 * @mb_map:		Mapping of memory B/W percentage to memory B/W delay
 */
struct rdt_membw {
	u32		max_delay;
	u32		min_bw;
	u32		bw_gran;
	u32		delay_linear;
	u32		*mb_map;
};

static inline bool is_llc_occupancy_enabled(void)
{
	return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID));
}

static inline bool is_mbm_total_enabled(void)
{
	return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID));
}

static inline bool is_mbm_local_enabled(void)
{
	return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID));
}

static inline bool is_mbm_enabled(void)
{
	return (is_mbm_total_enabled() || is_mbm_local_enabled());
}

/**
 * struct rdt_resource - attributes of an RDT resource
 * @rid:		The index of the resource
 * @alloc_enabled:	Is allocation enabled on this machine
 * @mon_enabled:		Is monitoring enabled for this feature
 * @alloc_capable:	Is allocation available on this machine
 * @mon_capable:		Is monitor feature available on this machine
 * @name:		Name to use in "schemata" file
 * @num_closid:		Number of CLOSIDs available
 * @cache_level:	Which cache level defines scope of this resource
 * @default_ctrl:	Specifies default cache cbm or memory B/W percent.
 * @msr_base:		Base MSR address for CBMs
 * @msr_update:		Function pointer to update QOS MSRs
 * @data_width:		Character width of data when displaying
 * @domains:		All domains for this resource
 * @cache:		Cache allocation related data
 * @format_str:		Per resource format string to show domain value
 * @parse_ctrlval:	Per resource function pointer to parse control values
 * @evt_list:			List of monitoring events
 * @num_rmid:			Number of RMIDs available
 * @mon_scale:			cqm counter * mon_scale = occupancy in bytes
 * @fflags:			flags to choose base and info files
 */
struct rdt_resource {
	int			rid;
	bool			alloc_enabled;
	bool			mon_enabled;
	bool			alloc_capable;
	bool			mon_capable;
	char			*name;
	int			num_closid;
	int			cache_level;
	u32			default_ctrl;
	unsigned int		msr_base;
	void (*msr_update)	(struct rdt_domain *d, struct msr_param *m,
				 struct rdt_resource *r);
	int			data_width;
	struct list_head	domains;
	struct rdt_cache	cache;
	struct rdt_membw	membw;
	const char		*format_str;
	int (*parse_ctrlval)	(char *buf, struct rdt_resource *r,
				 struct rdt_domain *d);
	struct list_head	evt_list;
	int			num_rmid;
	unsigned int		mon_scale;
	unsigned long		fflags;
};

int parse_cbm(char *buf, struct rdt_resource *r, struct rdt_domain *d);
int parse_bw(char *buf, struct rdt_resource *r,  struct rdt_domain *d);

extern struct mutex rdtgroup_mutex;

extern struct rdt_resource rdt_resources_all[];
extern struct rdtgroup rdtgroup_default;
DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key);

int __init rdtgroup_init(void);

enum {
	RDT_RESOURCE_L3,
	RDT_RESOURCE_L3DATA,
	RDT_RESOURCE_L3CODE,
	RDT_RESOURCE_L2,
	RDT_RESOURCE_MBA,

	/* Must be the last */
	RDT_NUM_RESOURCES,
};

#define for_each_capable_rdt_resource(r)				      \
	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	     r++)							      \
		if (r->alloc_capable || r->mon_capable)

#define for_each_alloc_capable_rdt_resource(r)				      \
	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	     r++)							      \
		if (r->alloc_capable)

#define for_each_mon_capable_rdt_resource(r)				      \
	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	     r++)							      \
		if (r->mon_capable)

#define for_each_alloc_enabled_rdt_resource(r)				      \
	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	     r++)							      \
		if (r->alloc_enabled)

#define for_each_mon_enabled_rdt_resource(r)				      \
	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	     r++)							      \
		if (r->mon_enabled)

/* CPUID.(EAX=10H, ECX=ResID=1).EAX */
union cpuid_0x10_1_eax {
	struct {
		unsigned int cbm_len:5;
	} split;
	unsigned int full;
};

/* CPUID.(EAX=10H, ECX=ResID=3).EAX */
union cpuid_0x10_3_eax {
	struct {
		unsigned int max_delay:12;
	} split;
	unsigned int full;
};

/* CPUID.(EAX=10H, ECX=ResID).EDX */
union cpuid_0x10_x_edx {
	struct {
		unsigned int cos_max:16;
	} split;
	unsigned int full;
};

void rdt_ctrl_update(void *arg);
struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn);
void rdtgroup_kn_unlock(struct kernfs_node *kn);
struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id,
				   struct list_head **pos);
ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
				char *buf, size_t nbytes, loff_t off);
int rdtgroup_schemata_show(struct kernfs_open_file *of,
			   struct seq_file *s, void *v);
struct rdt_domain *get_domain_from_cpu(int cpu, struct rdt_resource *r);
int alloc_rmid(void);
void free_rmid(u32 rmid);
int rdt_get_mon_l3_config(struct rdt_resource *r);
void mon_event_count(void *info);
int rdtgroup_mondata_show(struct seq_file *m, void *arg);
void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
				    unsigned int dom_id);
void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
				    struct rdt_domain *d);

#endif /* _ASM_X86_INTEL_RDT_H */
Commit	Line	Data
113c6097 FY	1	#ifndef _ASM_X86_INTEL_RDT_H
	2	#define _ASM_X86_INTEL_RDT_H
	3
5b825c3a	4	#include <linux/sched.h>
8ff42c02	5	#include <linux/kernfs.h>
5ff193fb FY	6	#include <linux/jump_label.h>
	7
	8	#define IA32_L3_QOS_CFG 0xc81
113c6097	9	#define IA32_L3_CBM_BASE 0xc90
c1c7c3f9	10	#define IA32_L2_CBM_BASE 0xd10
05b93417	11	#define IA32_MBA_THRTL_BASE 0xd50
113c6097	12
5ff193fb FY	13	#define L3_QOS_CDP_ENABLE 0x01ULL
5ff193fb FY	14
6a445edc VS	15	/*
	16	* Event IDs are used to program IA32_QM_EVTSEL before reading event
	17	* counter from IA32_QM_CTR
	18	*/
	19	#define QOS_L3_OCCUP_EVENT_ID 0x01
	20	#define QOS_L3_MBM_TOTAL_EVENT_ID 0x02
	21	#define QOS_L3_MBM_LOCAL_EVENT_ID 0x03
9f52425b TL	22
	23	#define MBM_CNTR_WIDTH 24
	24
edf6fa1c VS	25	#define RMID_VAL_ERROR BIT_ULL(63)
edf6fa1c VS	26	#define RMID_VAL_UNAVAIL BIT_ULL(62)
6a445edc VS	27
	28	/**
	29	* struct mon_evt - Entry in the event list of a resource
	30	* @evtid: event id
	31	* @name: name of the event
	32	*/
	33	struct mon_evt {
	34	u32 evtid;
	35	char *name;
	36	struct list_head list;
	37	};
	38
d89b7379 VS	39	/**
	40	* struct mon_data_bits - Monitoring details for each event file
	41	* @rid: Resource id associated with the event file.
	42	* @evtid: Event id associated with the event file
	43	* @domid: The domain to which the event file belongs
	44	*/
	45	union mon_data_bits {
	46	void *priv;
	47	struct {
	48	unsigned int rid : 10;
	49	unsigned int evtid : 8;
	50	unsigned int domid : 14;
	51	} u;
	52	};
	53
	54	struct rmid_read {
	55	struct rdtgroup *rgrp;
9f52425b	56	struct rdt_domain *d;
d89b7379 VS	57	int evtid;
	58	u64 val;
	59	};
	60
6a445edc VS	61	extern unsigned int intel_cqm_threshold;
	62	extern bool rdt_alloc_capable;
	63	extern bool rdt_mon_capable;
	64	extern unsigned int rdt_mon_features;
c7d9aac6 VS	65
	66	enum rdt_group_type {
	67	RDTCTRL_GROUP = 0,
	68	RDTMON_GROUP,
	69	RDT_NUM_GROUP,
	70	};
	71
	72	/**
	73	* struct mongroup - store mon group's data in resctrl fs.
d89b7379	74	* @mon_data_kn kernlfs node for the mon_data directory
c7d9aac6 VS	75	* @parent: parent rdtgrp
	76	* @crdtgrp_list: child rdtgroup node list
	77	* @rmid: rmid for this rdtgroup
	78	*/
	79	struct mongroup {
d89b7379	80	struct kernfs_node *mon_data_kn;
c7d9aac6 VS	81	struct rdtgroup *parent;
	82	struct list_head crdtgrp_list;
	83	u32 rmid;
	84	};
	85
5ff193fb FY	86	/**
	87	* struct rdtgroup - store rdtgroup's data in resctrl file system.
	88	* @kn: kernfs node
	89	* @rdtgroup_list: linked list for all rdtgroups
	90	* @closid: closid for this rdtgroup
12e0110c	91	* @cpu_mask: CPUs assigned to this rdtgroup
60cf5e10 FY	92	* @flags: status bits
60cf5e10 FY	93	* @waitcount: how many cpus expect to find this
12e0110c	94	* group when they acquire rdtgroup_mutex
c7d9aac6 VS	95	* @type: indicates type of this rdtgroup - either
	96	* monitor only or ctrl_mon group
	97	* @mon: mongroup related data
5ff193fb FY	98	*/
	99	struct rdtgroup {
	100	struct kernfs_node *kn;
	101	struct list_head rdtgroup_list;
0734ded1	102	u32 closid;
12e0110c	103	struct cpumask cpu_mask;
60cf5e10 FY	104	int flags;
60cf5e10 FY	105	atomic_t waitcount;
c7d9aac6 VS	106	enum rdt_group_type type;
c7d9aac6 VS	107	struct mongroup mon;
5ff193fb FY	108	};
5ff193fb FY	109
60cf5e10 FY	110	/* rdtgroup.flags */
	111	#define RDT_DELETED 1
	112
4ffa3c97 JO	113	/* rftype.flags */
	114	#define RFTYPE_FLAGS_CPUS_LIST 1
	115
5dc1d5c6 T	116	/*
	117	* Define the file type flags for base and info directories.
	118	*/
	119	#define RFTYPE_INFO BIT(0)
	120	#define RFTYPE_BASE BIT(1)
	121	#define RF_CTRLSHIFT 4
d4ab3320	122	#define RF_MONSHIFT 5
5dc1d5c6	123	#define RFTYPE_CTRL BIT(RF_CTRLSHIFT)
d4ab3320	124	#define RFTYPE_MON BIT(RF_MONSHIFT)
5dc1d5c6 T	125	#define RFTYPE_RES_CACHE BIT(8)
	126	#define RFTYPE_RES_MB BIT(9)
	127	#define RF_CTRL_INFO (RFTYPE_INFO \| RFTYPE_CTRL)
d4ab3320	128	#define RF_MON_INFO (RFTYPE_INFO \| RFTYPE_MON)
5dc1d5c6 T	129	#define RF_CTRL_BASE (RFTYPE_BASE \| RFTYPE_CTRL)
5dc1d5c6 T	130
5ff193fb FY	131	/* List of all resource groups */
	132	extern struct list_head rdt_all_groups;
	133
de016df8 VS	134	extern int max_name_width, max_data_width;
de016df8 VS	135
5ff193fb FY	136	int __init rdtgroup_init(void);
5ff193fb FY	137
4e978d06 FY	138	/**
4e978d06 FY	139	* struct rftype - describe each file in the resctrl file system
17f8ba1d TG	140	* @name: File name
	141	* @mode: Access mode
	142	* @kf_ops: File operations
4ffa3c97	143	* @flags: File specific RFTYPE_FLAGS_* flags
5dc1d5c6	144	* @fflags: File specific RF_* or RFTYPE_* flags
17f8ba1d TG	145	* @seq_show: Show content of the file
17f8ba1d TG	146	* @write: Write to the file
4e978d06 FY	147	*/
	148	struct rftype {
	149	char *name;
	150	umode_t mode;
	151	struct kernfs_ops *kf_ops;
4ffa3c97	152	unsigned long flags;
5dc1d5c6	153	unsigned long fflags;
4e978d06 FY	154
	155	int (seq_show)(struct kernfs_open_file of,
	156	struct seq_file sf, void v);
	157	/*
	158	* write() is the generic write callback which maps directly to
	159	* kernfs write operation and overrides all other operations.
	160	* Maximum write size is determined by ->max_write_len.
	161	*/
	162	ssize_t (write)(struct kernfs_open_file of,
	163	char *buf, size_t nbytes, loff_t off);
	164	};
	165
9f52425b TL	166	/**
	167	* struct mbm_state - status for each MBM counter in each domain
	168	* @chunks: Total data moved (multiply by rdt_group.mon_scale to get bytes)
	169	* @prev_msr Value of IA32_QM_CTR for this RMID last time we read it
	170	*/
	171	struct mbm_state {
	172	u64 chunks;
	173	u64 prev_msr;
	174	};
	175
0921c547 TG	176	/**
	177	* struct rdt_domain - group of cpus sharing an RDT resource
	178	* @list: all instances of this resource
	179	* @id: unique id for this instance
	180	* @cpu_mask: which cpus share this resource
edf6fa1c VS	181	* @rmid_busy_llc:
edf6fa1c VS	182	* bitmap of which limbo RMIDs are above threshold
9f52425b TL	183	* @mbm_total: saved state for MBM total bandwidth
9f52425b TL	184	* @mbm_local: saved state for MBM local bandwidth
0921c547 TG	185	* @ctrl_val: array of cache or mem ctrl values (indexed by CLOSID)
	186	* @new_ctrl: new ctrl value to be loaded
	187	* @have_new_ctrl: did user provide new_ctrl for this domain
	188	*/
	189	struct rdt_domain {
	190	struct list_head list;
	191	int id;
	192	struct cpumask cpu_mask;
edf6fa1c	193	unsigned long *rmid_busy_llc;
9f52425b TL	194	struct mbm_state *mbm_total;
9f52425b TL	195	struct mbm_state *mbm_local;
0921c547 TG	196	u32 *ctrl_val;
	197	u32 new_ctrl;
	198	bool have_new_ctrl;
	199	};
	200
	201	/**
	202	* struct msr_param - set a range of MSRs from a domain
	203	* @res: The resource to use
	204	* @low: Beginning index from base MSR
	205	* @high: End index
	206	*/
	207	struct msr_param {
	208	struct rdt_resource *res;
	209	int low;
	210	int high;
	211	};
	212
d3e11b4d TG	213	/**
	214	* struct rdt_cache - Cache allocation related data
	215	* @cbm_len: Length of the cache bit mask
	216	* @min_cbm_bits: Minimum number of consecutive bits to be set
	217	* @cbm_idx_mult: Multiplier of CBM index
	218	* @cbm_idx_offset: Offset of CBM index. CBM index is computed by:
	219	* closid * cbm_idx_multi + cbm_idx_offset
	220	* in a cache bit mask
	221	*/
	222	struct rdt_cache {
	223	unsigned int cbm_len;
	224	unsigned int min_cbm_bits;
	225	unsigned int cbm_idx_mult;
	226	unsigned int cbm_idx_offset;
	227	};
	228
05b93417 VS	229	/**
	230	* struct rdt_membw - Memory bandwidth allocation related data
	231	* @max_delay: Max throttle delay. Delay is the hardware
	232	* representation for memory bandwidth.
	233	* @min_bw: Minimum memory bandwidth percentage user can request
	234	* @bw_gran: Granularity at which the memory bandwidth is allocated
	235	* @delay_linear: True if memory B/W delay is in linear scale
	236	* @mb_map: Mapping of memory B/W percentage to memory B/W delay
	237	*/
	238	struct rdt_membw {
	239	u32 max_delay;
	240	u32 min_bw;
	241	u32 bw_gran;
	242	u32 delay_linear;
	243	u32 *mb_map;
	244	};
	245
6a445edc VS	246	static inline bool is_llc_occupancy_enabled(void)
	247	{
	248	return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID));
	249	}
	250
9f52425b TL	251	static inline bool is_mbm_total_enabled(void)
	252	{
	253	return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID));
	254	}
	255
	256	static inline bool is_mbm_local_enabled(void)
	257	{
	258	return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID));
	259	}
	260
	261	static inline bool is_mbm_enabled(void)
	262	{
	263	return (is_mbm_total_enabled() \|\| is_mbm_local_enabled());
	264	}
	265
c1c7c3f9 FY	266	/**
c1c7c3f9 FY	267	* struct rdt_resource - attributes of an RDT resource
d89b7379	268	* @rid: The index of the resource
1b5c0b75	269	* @alloc_enabled: Is allocation enabled on this machine
6a445edc	270	* @mon_enabled: Is monitoring enabled for this feature
1b5c0b75	271	* @alloc_capable: Is allocation available on this machine
6a445edc	272	* @mon_capable: Is monitor feature available on this machine
d3e11b4d TG	273	* @name: Name to use in "schemata" file
	274	* @num_closid: Number of CLOSIDs available
	275	* @cache_level: Which cache level defines scope of this resource
	276	* @default_ctrl: Specifies default cache cbm or memory B/W percent.
	277	* @msr_base: Base MSR address for CBMs
0921c547	278	* @msr_update: Function pointer to update QOS MSRs
d3e11b4d TG	279	* @data_width: Character width of data when displaying
	280	* @domains: All domains for this resource
	281	* @cache: Cache allocation related data
c6ea67de VS	282	* @format_str: Per resource format string to show domain value
c6ea67de VS	283	* @parse_ctrlval: Per resource function pointer to parse control values
6a445edc VS	284	* @evt_list: List of monitoring events
	285	* @num_rmid: Number of RMIDs available
	286	* @mon_scale: cqm counter * mon_scale = occupancy in bytes
5dc1d5c6	287	* @fflags: flags to choose base and info files
c1c7c3f9 FY	288	*/
c1c7c3f9 FY	289	struct rdt_resource {
d89b7379	290	int rid;
1b5c0b75	291	bool alloc_enabled;
6a445edc	292	bool mon_enabled;
1b5c0b75	293	bool alloc_capable;
6a445edc	294	bool mon_capable;
c1c7c3f9 FY	295	char *name;
c1c7c3f9 FY	296	int num_closid;
d3e11b4d	297	int cache_level;
2545e9f5	298	u32 default_ctrl;
d3e11b4d	299	unsigned int msr_base;
0921c547 TG	300	void (msr_update) (struct rdt_domain d, struct msr_param *m,
0921c547 TG	301	struct rdt_resource *r);
de016df8	302	int data_width;
c1c7c3f9	303	struct list_head domains;
a83827d0 TG	304	struct rdt_cache cache;
a83827d0 TG	305	struct rdt_membw membw;
c6ea67de VS	306	const char *format_str;
	307	int (parse_ctrlval) (char buf, struct rdt_resource *r,
	308	struct rdt_domain *d);
6a445edc VS	309	struct list_head evt_list;
	310	int num_rmid;
	311	unsigned int mon_scale;
5dc1d5c6	312	unsigned long fflags;
c1c7c3f9 FY	313	};
c1c7c3f9 FY	314
c6ea67de	315	int parse_cbm(char buf, struct rdt_resource r, struct rdt_domain *d);
64e8ed3d	316	int parse_bw(char buf, struct rdt_resource r, struct rdt_domain *d);
6a507a6a	317
2264d9c7 TL	318	extern struct mutex rdtgroup_mutex;
2264d9c7 TL	319
c1c7c3f9	320	extern struct rdt_resource rdt_resources_all[];
5ff193fb	321	extern struct rdtgroup rdtgroup_default;
1b5c0b75	322	DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key);
5ff193fb FY	323
5ff193fb FY	324	int __init rdtgroup_init(void);
c1c7c3f9 FY	325
	326	enum {
	327	RDT_RESOURCE_L3,
	328	RDT_RESOURCE_L3DATA,
	329	RDT_RESOURCE_L3CODE,
	330	RDT_RESOURCE_L2,
05b93417	331	RDT_RESOURCE_MBA,
c1c7c3f9 FY	332
	333	/* Must be the last */
	334	RDT_NUM_RESOURCES,
	335	};
	336
895c663e VS	337	#define for_each_capable_rdt_resource(r) \
	338	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	339	r++) \
	340	if (r->alloc_capable \|\| r->mon_capable)
	341
1b5c0b75	342	#define for_each_alloc_capable_rdt_resource(r) \
c1c7c3f9	343	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
17f8ba1d	344	r++) \
1b5c0b75	345	if (r->alloc_capable)
c1c7c3f9	346
6a445edc VS	347	#define for_each_mon_capable_rdt_resource(r) \
	348	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	349	r++) \
	350	if (r->mon_capable)
	351
1b5c0b75	352	#define for_each_alloc_enabled_rdt_resource(r) \
2264d9c7 TL	353	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
2264d9c7 TL	354	r++) \
1b5c0b75	355	if (r->alloc_enabled)
2264d9c7	356
d4ab3320 VS	357	#define for_each_mon_enabled_rdt_resource(r) \
	358	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
	359	r++) \
	360	if (r->mon_enabled)
	361
c1c7c3f9 FY	362	/* CPUID.(EAX=10H, ECX=ResID=1).EAX */
	363	union cpuid_0x10_1_eax {
	364	struct {
	365	unsigned int cbm_len:5;
	366	} split;
	367	unsigned int full;
	368	};
	369
ab66a33b VS	370	/* CPUID.(EAX=10H, ECX=ResID=3).EAX */
	371	union cpuid_0x10_3_eax {
	372	struct {
	373	unsigned int max_delay:12;
	374	} split;
	375	unsigned int full;
	376	};
	377
2545e9f5 VS	378	/* CPUID.(EAX=10H, ECX=ResID).EDX */
2545e9f5 VS	379	union cpuid_0x10_x_edx {
c1c7c3f9 FY	380	struct {
	381	unsigned int cos_max:16;
	382	} split;
	383	unsigned int full;
	384	};
2264d9c7	385
2545e9f5	386	void rdt_ctrl_update(void *arg);
60cf5e10 FY	387	struct rdtgroup rdtgroup_kn_lock_live(struct kernfs_node kn);
60cf5e10 FY	388	void rdtgroup_kn_unlock(struct kernfs_node *kn);
d89b7379 VS	389	struct rdt_domain rdt_find_domain(struct rdt_resource r, int id,
d89b7379 VS	390	struct list_head **pos);
60ec2440 TL	391	ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
	392	char *buf, size_t nbytes, loff_t off);
	393	int rdtgroup_schemata_show(struct kernfs_open_file *of,
	394	struct seq_file s, void v);
edf6fa1c	395	struct rdt_domain get_domain_from_cpu(int cpu, struct rdt_resource r);
c7d9aac6 VS	396	int alloc_rmid(void);
c7d9aac6 VS	397	void free_rmid(u32 rmid);
6a445edc	398	int rdt_get_mon_l3_config(struct rdt_resource *r);
d89b7379 VS	399	void mon_event_count(void *info);
d89b7379 VS	400	int rdtgroup_mondata_show(struct seq_file m, void arg);
895c663e VS	401	void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
	402	unsigned int dom_id);
	403	void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
	404	struct rdt_domain *d);
4f341a5e	405
113c6097	406	#endif /* _ASM_X86_INTEL_RDT_H */